Every Time You Look Up At The

[n]o Scientist Likes To Be Criticized. ... But You Don't Reply To Critics: "wait A Minute, Wait A Minute; This Is A Really Good Idea. I'm Very Fond Of It. It's Done You No Harm. Please Don't Attack It." That's Not The Way It Goes. The Hard But Just Rule Is That If The Ideas Don't Work, You Must Throw Them Away. Don't Waste Any Neurons On What Doesn't Work. Devote Those Neurons To New Ideas That Better Explain The Data. Valid Criticism Is Doing You A Favor.

There Is Much That Science Doesn't Understand, Many Mysteries Still To Be Resolved. In A Universe Tens Of Billions Of Light-years Across And Some Ten Or Fifteen Billion Years Old, This May Be The Case Forever. We Are Constantly Stumbling On New Surprises

The Truth May Be Puzzling. It May Take Some Work To Grapple With. It May Be Counterintuitive. It May Contradict Deeply Held Prejudices. It May Not Be Consonant With What We Desperately Want To Be True. But Our Preferences Do Not Determine What's True.

Science Is A Collaborative Enterprise, Spanning The Generations. When It Permits Us To See The Far Side Of Some New Horizon, We Remember Those Who Prepared The Way - Seeing For Them Also.

It Would Be Wryly Interesting If In Human History The Cultivation Of Marijuana Led Generally To The Invention Of Agriculture, And Thereby To Civilization.